A medical device

Abstract

The present invention belongs to the technical field of medical device ablation, and provides a medical device device, which mainly includes a first fixed rod, a second fixed rod, a first shell, an outer sheath tube and a first needle tube, wherein the first shell is movably sleeved on one end of the first fixed rod, and the second shell is movably sleeved on one end of the second fixed rod; the outer sheath tube, one end of which passes through and is connected to the first fixed rod; the first needle tube, which is movably inserted into the outer sheath tube, one end of which is provided with an ablation electrode, and the ablation electrode can be configured with ablation energy, and the first needle tube is connected to the first shell; the first fixed rod and the second fixed rod are detachably connected, and a first fixing component is provided at the connection between the first fixed rod and the second fixed rod, and the outer sheath tube can be relatively moved relative to the first fixing component or the first fixing component can fix the outer sheath tube. By adopting the above structure, the outer sheath tube can be adjusted in a larger length range, thereby meeting the needs of ablation surgery in which the same device is applied to different scenarios.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical device ablation, and in particular to a medical device. Background Art

[0002] With the continuous advancement of science and technology, pulse ablation surgery is increasingly used in minimally invasive surgery to ablate and remove tumor cells. The locations that usually need to be ablated include natural cavities. For example, natural cavities include the nasal cavity, esophagus, trachea, digestive tract, ear canal, oral cavity and other very important parts. With the rapid development of medical technology, the number of medical devices used for ablation treatment is increasing, and the structures are becoming more and more diverse.

[0003] Existing ablation medical devices need to be used in conjunction with endoscopes or robot channels when performing ablation. The length of the endoscope pipeline used in ablation surgeries in different scenarios is different. At the same time, the required length of the ablation catheter of the ablation device is also different. For example, in existing ablation surgeries, the ablation tubes required for the digestive tract and the airway are different in length, and the existing surgical method uses ablation instruments with two different lengths of ablation tubes for surgery. Therefore, the cost of ablation equipment required by the hospital increases, and it is impossible to adaptively match different endoscopes or robot channels according to current surgical needs. Therefore, it is necessary for those skilled in the art to solve the above technical problems. Summary of the invention

[0004] The present invention provides a medical device to solve the problem that the lengths of ablation catheters required for different parts of the above technical background are inconsistent, and the length of the tubes of the endoscope or robot channel required for the current operation cannot be adaptively matched, resulting in increased hospital medical equipment costs and inconvenience in use.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A medical device, comprising:

[0007] The first fixing rod is provided with a first through passage;

[0008] The second fixing rod is provided with a second through passage;

[0009] A first shell is provided with a first cavity, the first shell is sleeved on one end of the first fixing rod, and the first shell can move relatively linearly along the axis of the first fixing rod;

[0010] A second shell is provided with a second cavity, the second shell is sleeved on one end of the second fixing rod, and the second shell can move relatively linearly along the axis of the second fixing rod;

[0011] Wherein, the first fixing rod and the second fixing rod are detachably connected, a first fixing assembly is provided at the connection between the first fixing rod and the second fixing rod, and the first fixing assembly is provided with a retractable first locking channel;

[0012] An outer sheath tube is provided with a third through passage, the outer sheath tube is arranged at one end of the second shell, one end of the outer sheath tube passes through the first locking passage and is connected to the first fixing rod;

[0013] The medical consumable is a slender structure and is movably arranged in the third channel of the outer sheath tube. The medical consumable has a distal end and a proximal end. The distal end of the medical consumable can be extended out or received in the outer sheath tube.

[0014] In some embodiments, the first fixing assembly includes a first locking knob, an elastic fixing member, and a first top block, the first locking channel is disposed on the elastic fixing member, the first locking knob is provided with a through first mounting channel, the elastic fixing member is disposed in the first mounting channel, and the first top block is disposed on the second fixing rod;

[0015] The first locking knob is provided with a first external thread, and the second fixing rod is provided with a corresponding first internal thread. When the first locking knob is screwed and locked, the first top block squeezes the elastic fixing member to reduce the inner diameter of the first locking channel.

[0016] In some embodiments, the second fixing rod is provided with a second external thread, and the first fixing rod is provided with a matching second internal thread, wherein the inner diameter of the second internal thread is greater than the outer diameter of the first locking knob.

[0017] In some embodiments, the first position-limiting assembly is further provided at the connection between the first fixing rod and the second fixing rod, the first position-limiting assembly includes a first position-limiting base provided on the first fixing rod, a first cover plate detachably connected to the first position-limiting base, and a first adjustment button, a third cavity is provided between the first position-limiting base and the first cover plate, and a part of the first adjustment button is movably provided in the third cavity;

[0018] In which, a second limiting structure that cooperates with each other is provided between the first adjusting button and the second fixing rod, and the second limiting structure includes a second limiting column arranged on the first adjusting button and a second limiting hole arranged on the second fixing rod, or a second limiting hole arranged on the first adjusting button and a second limiting column arranged on the second fixing rod, and the second limiting column can be inserted into or withdrawn from the second limiting hole.

[0019] In some embodiments, a first abutment surface is provided on the first adjustment button, and a second abutment surface is provided on the first limiting base, and the first abutment surface abuts against the second abutment surface, wherein a movement direction of the second abutment surface relative to the first abutment surface is consistent with a movement direction of the second limiting column relative to the second limiting hole.

[0020] In some embodiments, the first adjusting button is provided with a first limiting boss, the first limiting base is provided with a first limiting groove, and / or the first cover plate is provided with a first limiting groove;

[0021] Or the first adjusting button is provided with a first limiting groove, the first limiting base is provided with a first limiting boss, and / or the first cover plate is provided with a first limiting boss;

[0022] Among them, the first limiting groove is adapted to the first limiting boss, the first limiting boss is inserted into the first limiting groove, the moving direction of the first limiting boss relative to the first limiting groove is consistent with the moving direction of the second limiting column relative to the second limiting hole, and the length of the first limiting groove is not less than the moving distance of the non-fixed end of the second limiting column.

[0023] In some embodiments, a reset spring pin is provided between the first limiting base and the first adjusting button, a fixed end of the reset spring pin is provided on the first limiting base, and a free end of the reset spring pin abuts against the first adjusting button.

[0024] In some embodiments, a head-end rotating member is provided at one end of the second shell, and the head-end rotating member is rotatably arranged at an end of the second shell away from the second fixed rod. A first guide tube is provided on the head-end rotating member, and the first guide tube is adapted to the second channel of the second fixed rod. The first guide tube is movably inserted in the second channel, and the first guide tube can rotate relative to the first fixed rod.

[0025] In some embodiments, it also includes a clamp channel holder disposed on the head end rotating member, the clamp channel holder can be detachably disposed on the head end rotating member, the clamp channel holder includes an endoscope buckle adapted to the endoscope clamp channel opening, a first rotating member and an elastic sealing member, the elastic sealing member is provided with a first fixed channel, the elastic sealing member is disposed in the first rotating member, the first rotating member and the endoscope buckle are threadedly matched, when the first rotating member is tightened and fixed, the endoscope clamp channel opening squeezes the elastic sealing member, and then the first fixed channel is contracted to lock and fix the stress tube sleeved on the outer sheath tube.

[0026] In some embodiments, the medical consumable is an aspiration needle tube, one end of which is provided with a puncture tip, the other end of the aspiration needle tube is connected to the first shell, and the aspiration needle tube is provided with a first aspiration channel running through the aspiration needle tube.

[0027] In some embodiments, a needle cap is provided at one end of the needle core, and the needle cap is detachably connected to the first shell. The needle core can be movably inserted into the first suction channel, and the other end of the needle core does not pass through the puncture tip of the suction needle tube.

[0028] In some embodiments, the negative pressure device is detachably connected to the first shell and communicates with the first suction channel.

[0029] In some embodiments, the medical consumable is a first push rod of a rod-shaped structure, the proximal end of the first push rod is connected to the first shell, and the distal end of the first push rod is provided with an ablation electrode, and the ablation electrode can be configured with ablation energy.

[0030] In some embodiments, the first push rod and the ablation electrode are integrally formed of a metallic conductive material, and a first insulating layer is disposed on the first push rod, wherein a distal end portion of the first push rod is exposed to form the ablation electrode.

[0031] In some embodiments, the ablation electrode has a puncture needle tip, wherein the first push rod is provided with a fourth through channel, the fourth channel passes through the ablation electrode to form a first needle tube, and the fourth channel can be used to connect with a negative pressure device or plug in an electrode needle.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The present application connects a first fixing rod and a second fixing rod detachably, and sets a first fixing component at the connection between the first fixing rod and the second fixing rod. The first fixing component is provided with a retractable first locking channel. One end of the outer sheath passes through the first locking channel and is connected to the first fixing rod. The outer sheath can be locked and fastened by the first fixing component so as to adjust the length of the outer sheath away from one end of the second shell body to adapt to the length of the outer sheath required for different surgical scenarios, adaptively match the length of the tube of the endoscope or robot channel currently in use, and realize the application of the same ablation device in different scenarios.

[0034] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of a medical device of the present invention;

[0036] Figure 2 It is a schematic structural diagram of an outer sheath tube of a medical device of the present invention in an adjustment state;

[0037] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0038] Figure 4 A cross-sectional view of an assembly structure of a first shell and a second shell of a medical device of the present invention;

[0039] Figure 5 A cross-sectional view of the internal structure of a first fixing rod of a medical device of the present invention;

[0040] Figure 6 A cross-sectional view of a head end rotating member of a medical device of the present invention;

[0041] Figure 7 An exploded view of the assembly structure of the first fixing rod and the second fixing rod of the present invention;

[0042] Figure 8 is a three-dimensional structural diagram of the second fixing rod of the present invention;

[0043] Fig. 9 is a three-dimensional structural diagram of the first cover plate of the present invention;

[0044] Fig.10 is a three-dimensional structural diagram of the first adjustment button of the present invention;

[0045] Fig.11 for Figure 4 Enlarged view of point B in the middle;

[0046] Fig.12 is a three-dimensional diagram of the clamp channel fixer of the present invention;

[0047] Fig.13 is a cross-sectional view of the clamp channel fixer of the present invention;

[0048] Fig.14 It is a schematic diagram of the structure of the clamp channel fixer of the present invention assembled on an endoscope;

[0049] Fig.15 It is a structural schematic diagram of the first position limiting base of the present invention;

[0050] Fig.16 It is a structural schematic diagram of the needle core of the present invention and an assembly diagram of the needle core;

[0051] Fig.17 It is a schematic diagram of the structure of the ablation device of the present invention when used for biopsy sampling;

[0052] Fig.18This is a schematic diagram of the structure of the handle structure of the present invention used only for biopsy;

[0053] Fig.19 This is a schematic diagram of the structure of the handle structure of the present invention used only for ablation;

[0054] Fig. 20 is a schematic structural diagram of an ablation electrode of the present invention;

[0055] Fig.21 It is a structural schematic diagram of the ablation device of the present invention performing needle insertion ablation with the split structure when the outer sheath is adjusted over a large range;

[0056] Fig. 22 Another schematic diagram of the structure of the energy transmission pathway of the present invention;

[0057] Fig.23 for Fig.19 The internal structure cross-sectional view in

[0058] Fig.24 It is a schematic diagram of the structure of the first fixing rod and the second fixing rod being connected by a convex clamping connection according to the present invention;

[0059] Fig.25 is a cross-sectional view of the second housing of the present invention;

[0060] Fig.26 It is a schematic diagram of the assembly structure of the flanging sleeve of the present invention;

[0061] Fig. 27 It is a structural schematic diagram of the overall device of the present invention applied to a robot channel;

[0062] Fig.28 for Fig.18 Enlarged view of point G in the middle;

[0063] Fig.29 for Fig.19 Enlarged view of point H in the middle.

[0064] Description of the accompanying drawings: second shell 100, suction needle tube 1001, first suction channel 1002, puncture tip 1003, needle core 1004, needle cap 1005, second locking screw 101, head end rotating member 102, first guide tube 1021, first rotating member 1022, first fixing sleeve 10221, endoscope buckle 1023, elastic sealing member 1024, endoscope clamp opening 1025, upper shell 103, lower shell 104, second fixing rod 200, first push rod 2001, second channel 201, second limiting hole 202, second external thread 203, first internal thread 204, second annular boss 205, first fixing rod 300, first channel 301, first fixing sleeve 302, third locking knob 3021, first elastic buckle 3022, first slot 3023, fifth channel 3024, first limiting base 30 31, second internal thread 30311, reset spring pin 30312, second abutting surface 30313, first fixing column 30314, first adjusting button 3032, second limiting column 30321, first limiting boss 30322, first abutting surface 30323, first cover plate 3033, first limiting groove 30331, first fixing hole 30332, first top block 3035, first locking knob 3041, elastic fixing Fixed part 3042, first shell 400, first locking screw 401, two-way valve 402, syringe 403, electrode needle 404, first non-metallic insulating part 4051, first metal conductive part 4052, first wire 406, first clamping ring 407, outer sheath 500, flange sleeve 501, first needle tube 600, first insulating layer 601, ablation electrode 602, developing groove 6021, first fixing assembly 700. DETAILED DESCRIPTION

[0065] The present application is further described in detail below in conjunction with specific drawings. In the description of this embodiment, unless otherwise specified, the terms "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the present application must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application.

[0066] like Figure 1 and Figure 2 As shown, a medical device provided by the present invention mainly includes a first fixing rod 300 , a second fixing rod 200 , a first shell 400 , a second shell 100 , an outer sheath 500 , a first needle tube 600 and a first fixing assembly 700 .

[0067] The first fixing rod 300 is provided with a first passage 301 penetrating the first fixing rod 300. Fig.18 and Fig.19As shown, the second fixing rod 200 is provided with a second channel 201 penetrating through both ends of the second fixing rod 200;

[0068] The first shell 400 is provided with a first cavity. The first shell 400 is sleeved on one end of the first fixing rod 300. The first shell 400 can move linearly relative to the axis of the first fixing rod 300 to finely adjust the insertion depth of the ablation electrode 602. The second shell 100 is provided with a second cavity. The second shell 100 is sleeved on one end of the second fixing rod 200. The second shell 100 can move linearly relative to the axis of the second fixing rod 200 to finely adjust the length of the outer sheath 500. In this embodiment, for ease of assembly, the first shell 400 and the second shell 100 are both detachable assembly structures, such as Fig.25 , which is a cross-sectional view of the second shell 100 , the second shell 100 includes an upper shell 103 and a lower shell 104 , and the upper shell 103 and the lower shell 104 are fixedly connected by a pin structure of a hole axis, or by a snap-fit.

[0069] Specifically, a plurality of first limiting ribs are arranged in the first housing 400, which are adapted to the shape of the first fixing rod 300. At the same time, a second limiting rib is arranged in the first housing 400, and a first limiting groove adapted thereto is arranged on the first fixing rod 300. The length direction of the second limiting rib is parallel to the axial direction of the first fixing rod 300, thereby ensuring that the structure between the first fixing rod 300 and the first housing 400 is compact, and the first housing 400 is only allowed to move linearly along the first fixing rod 300. Similarly, the assembly structure and principle between the second housing 100 and the second fixing rod 200 are the same as those between the first fixing rod 300 and the first housing 400, and will not be described in detail here.

[0070] The medical consumable is a slender structure, which is movably arranged in the third channel of the outer sheath tube 500. The medical consumable has a distal end and a proximal end. The proximal end of the medical consumable passes through the outer sheath tube 500 and is connected to the first shell 400. The distal end of the medical consumable can be extended out or stored in the third channel of the outer sheath tube 500. By moving the first shell 400 relative to the first fixed rod 300, the position of the distal end of the medical consumable is equivalent to the outer sheath tube 500.

[0071] The outer sheath tube 500 is provided with a third channel running through both ends thereof. The outer sheath tube 500 is arranged at one end of the second shell 100 away from the second fixing rod 200. One end of the outer sheath tube 500 passes through the second cavity of the second shell 100 and the first channel 301 of the first fixing rod 300 to be connected with the first fixing rod 300.

[0072] Among them, the first fixing rod 300 and the second fixing rod 200 are detachably connected, and the first fixing component 700 is arranged at the connection between the first fixing rod 300 and the second fixing rod 200. The first fixing component 700 is provided with a retractable first locking channel, and the outer sheath tube 500 passes through the first locking channel of the first fixing component 700. When the first locking channel is in a normal state, the outer sheath tube 500 can move relative to the first fixing component 700, so as to adjust the length of the outer sheath tube 500. When the length adjustment of the outer sheath tube 500 is completed, the first fixing component 700 is used to fix the outer sheath tube 500 by adjusting the inner diameter of the first locking channel, so that the length of the outer sheath tube 500 currently entering the endoscope matches the length of the current endoscope or robot pipe. When adjusting over a longer range, two people are required to work together. One operator locks and fixes one end of the second shell 100 on the endoscope clamp opening 1025, and the other operator adjusts the insertion and withdrawal of the outer sheath 500. The length of the outer sheath 500 is adjusted and set according to actual needs. When the adjustment is completed, the first locking knob 3041 is locked.

[0073] In this embodiment, by providing the first fixing assembly 700 and providing a retractable first locking channel on the first fixing assembly 700, it is possible to adjust the length of the outer sheath tube 500 in a wide range, for example, the length adjustment range of the outer sheath tube 500 can be between 900 mm and 1600 mm. When the first fixing rod 300 and the second fixing rod 200 are connected, the surgical length of the outer sheath tube 500 is at its longest state.

[0074] Furthermore, if Figure 7 and Fig.11 As shown, the first fixing assembly 700 includes a first locking knob 3041, a first top block 3035 and an elastic fixing member 3042, the elastic fixing member 3042 is sleeved on the outer sheath 500, the first top block 3035 is arranged on the second fixing rod 200, the first locking channel is arranged on the elastic fixing member 3042, the first locking knob 3041 is provided with a first installation channel, and the elastic fixing member 3042 is arranged in the first installation channel. The first locking knob 3041 is provided with a first external thread, and the second channel 201 of the second fixing rod 200 is provided with a first internal thread 204, as shown in FIG. Figure 8 As shown, when the first locking knob 3041 is locked together by the first external thread and the first internal thread 204, the first top block 3035 squeezes the elastic fixing member 3042, thereby shrinking the first locking channel of the elastic fixing member 3042, thereby squeezing the outer sheath 500, thereby fixing the position of the outer sheath 500 relative to the first locking knob 3041.

[0075] Specifically, in this embodiment, the elastic fixing member 3042 is a rubber member of a cylindrical barrel structure, which can be elastically deformed. Optionally, the elastic fixing member 3042 can be a metal spring structure that can be elastically deformed. In this embodiment, the first locking knob 3041 of the first external thread section can be an elastic structure, so that the elastic fixing member can be squeezed when locking. Optionally, a plurality of notches coplanar with the axial direction of the first locking knob 3041 can be provided in the portion provided with the first external thread section, and the first external thread section can be in a truncated cone structure, so that when the first locking knob 3041 is locked, the first locking knob 3041 squeezes the elastic fixing member 3042, thereby fixing the external sheath 500.

[0076] In one embodiment, Fig.19 and Fig.29 As shown, the medical consumable is an aspiration needle tube 1001, one end of which is provided with a puncture tip 1003, the aspiration needle tube 1001 is movably arranged in the third channel of the outer sheath tube 500, the other end of the aspiration needle tube 1001 passes through the outer sheath tube 500 and is connected to the first shell 400, the aspiration needle tube 1001 is provided with a first aspiration channel 1002 that runs through itself, and the first aspiration channel 1002 is used to connect to a negative pressure device to extract tissue biopsy, such as Figure 16-17 As shown. In this embodiment, the needle core 1004 is first inserted into the first suction channel 1002, and then the needle cap 1005 is rotated and fixed on the first shell 400. The needle core 1004 supports the suction needle tube 1001 and provides puncture force. After the puncture tip 1003 of the suction needle tube 1001 is delivered to the target position, the needle core 1004 is taken out, and a negative pressure device is connected to one end of the first shell 400, and the valve of the two-way valve 402 is opened to connect the negative pressure device with the first suction channel 1002. The first shell 400 is repeatedly moved relative to the first fixed rod 300, so that the puncture tip 1003 of the suction needle tube 1001 is repeatedly moved to achieve tissue dipping, and then the negative pressure device provides negative pressure to extract the sample tissue. In this embodiment, the negative pressure device is a syringe 403.

[0077] In one embodiment, Fig.18 and Fig.28As shown, the medical consumable is a first push rod 2001 of a rod-shaped structure, which is movably arranged in the third channel of the outer sheath tube 500. One end of the first push rod 2001 is connected to the first shell 400, and the other end of the first push rod 2001 is provided with an ablation electrode 602, and the ablation electrode 602 can be configured with ablation energy to achieve ablation action. In this embodiment, by setting the first push rod 2001 and the ablation electrode 602, a separate ablation operation can be achieved. In this example, the ablation electrode 602 is provided with a puncture structure. After determining the position of the lesion, the ablation electrode 602 is pushed to puncture the position of the lesion by pushing the first shell 400. After determining that the ablation electrode 602 has reached the expected position through imaging facilities such as CT, the electrode end of the electrode needle 404 is connected to the Luer of the first shell 400, and the other end is connected to the energy generator, and then the energy is output, thereby achieving ablation of the lesion. Among them, the surface of the ablation electrode 602 should be provided with an ultrasonic imaging feature.

[0078] In this embodiment, the ablation electrode 602 can be a basket woven structure, or a columnar structure with a diameter similar to that of the first push rod 2001. The first push rod 2001 can be made of metal material to directly conduct electricity for ablation energy transmission, or a wire can be embedded in the first push rod 2001 to connect the ablation electrode 602 to an external energy generator.

[0079] Furthermore, the first push rod 2001 and the ablation electrode 602 are integrally formed of a metal conductive material, such as stainless steel or nickel-titanium alloy. A fourth through channel is provided on the first push rod 2001, and the fourth channel penetrates the ablation electrode 602, thereby forming the first needle tube 600. Figure 3 As shown, a first insulating layer 601 is provided on the first needle tube 600, and the distal portion of the first needle tube 600 is exposed to form an ablation electrode 602, wherein the ablation electrode 602 is provided with a puncture needle tip, and external ablation energy is transmitted to the ablation electrode 602 through the first needle tube 600, thereby realizing the transmission of ablation energy. In this embodiment, the fourth channel can be used to connect to a negative pressure device for biopsy suction, or to insert an electrode needle 404 in the fourth channel to meet the surgical needs of biopsy or ablation. When the fourth channel is connected to a negative pressure device, in this embodiment, the negative pressure device is a syringe 403, and a sample aspiration biopsy operation is performed at this time, such as Fig.17 As shown, a detachable syringe 403 is provided on the Luer connector 405 at one end of the first housing 400, and the syringe 403 is provided on the first housing 400 through a two-way valve 402. The preparation work for biopsy sampling is as described above, and no further elaboration is made here. When it is confirmed that the biopsy tissue is tumor tissue, the electrode needle 404 is plugged into the fourth channel at this time, and the specific operation steps are as described above to perform an ablation operation on the lesion tissue. In this embodiment, the device can meet both ablation and biopsy operations, without the need for repeated intubation of the patient, thereby reducing the patient's discomfort.

[0080] Furthermore, in order to confirm the specific position of the ablation electrode 602, as Fig. 20 As shown, a developing groove 6021 is provided on the surface of the ablation electrode 602, and the position of the ablation electrode 602 can be confirmed in combination with an ultrasonic instrument. In this embodiment, the developing groove 6021 is an annular groove, and optionally, the developing groove 6021 can be a dot-shaped structure groove.

[0081] In one embodiment, in order to facilitate the detachable connection between the first fixing rod 300 and the second fixing rod 200, a second external thread 203 is provided on the second fixing rod 200, and a matching second internal thread 30311 is provided on the first fixing rod 300, wherein the inner diameter of the second internal thread 30311 is larger than the outer diameter of the first locking knob 3041, so that the first locking knob 3041 can be withdrawn from the first channel 301 of the first fixing rod 300.

[0082] Optionally, a snap-fit ​​connection structure may be formed between the first fixing rod 300 and the second fixing rod 200, such as Fig.24 As shown, in this embodiment, a plurality of first annular grooves 305 are provided at one end of the first fixing rod 300 , and a plurality of matching second annular bosses 205 are provided at one end of the second fixing rod 200 . When the first fixing rod 300 and the second fixing rod 200 are connected, the second annular bosses 205 are snapped into the first annular grooves 305 .

[0083] In one embodiment, in order to prevent the threaded fit between the first fixing rod 300 and the second fixing rod 200 from loosening, a first position-limiting assembly is further included at the connection between the first fixing rod 300 and the second fixing rod 200, and the first position-limiting assembly is mainly used to prevent the first fixing rod 300 from rotating relative to the second fixing rod 200. Specifically, the first position-limiting assembly includes a first position-limiting base 3031 disposed on the first fixing rod 300, a first cover plate 3033 detachably connected to the first position-limiting base 3031, and a first adjustment button 3032, a third cavity is disposed between the first position-limiting base 3031 and the first cover plate 3033, and a part of the first adjustment button 3032 is movably disposed in the third cavity;

[0084] Among them, a second limiting structure that cooperates with each other is provided between the first adjustment button 3032 and the second fixing rod 200, such as Fig.10As shown, the second limiting structure includes a second limiting column 30321 disposed on the first adjustment button 3032 and a second limiting hole 202 disposed on the second fixing rod 200, or a second limiting hole 202 disposed on the first adjustment button 3032 and a second limiting column 30321 disposed on the second fixing rod 200, and the second limiting column 30321 can be inserted into or withdrawn from the second limiting hole 202. The moving direction of the first adjustment button 3032 is consistent with the axial direction of the second limiting column 30321, so that when the first adjustment button 3032 is pushed, the second limiting column 30321 can be separated from the second limiting hole 202. When the second limiting column 30321 is separated from the second limiting hole 202, the first fixing rod 300 and the second fixing rod 200 can rotate relative to each other.

[0085] In one embodiment, Fig.10 and Fig.15 As shown, in order to ensure that the axis of the first adjustment button 3032 and the second limiting column 30321 are consistent, the first adjustment button 3032 is more compact and stable between the first limiting base 3031 and the first cover plate 3033, a first abutting surface 30323 is provided on the first adjustment button 3032, and a second abutting surface 30313 is provided on the first limiting base 3031, and the first abutting surface 30323 abuts against the second abutting surface 30313. The first abutting surface 30323 and the second abutting surface 30313 are both planar structures, and the moving direction of the first abutting surface 30323 relative to the second abutting surface 30313 is consistent with the moving direction of the second limiting column 30321 relative to the second limiting hole 202.

[0086] Furthermore, if Fig. 9 , Fig.10 and Fig.15 As shown, a first limiting boss 30322 is provided on the first adjustment button 3032, and a first limiting groove 30331 is provided on the first limiting base 3031 and the first cover plate 3033. The first limiting boss 30322 is inserted into the first limiting groove 30331, wherein the moving direction of the first limiting boss 30322 relative to the first limiting groove 30331 is consistent with the axial direction of the second limiting column 30321, and the length of the first limiting groove 30331 is not less than the moving distance of the non-fixed end of the second limiting column 30321, the non-fixed end being the end of the second limiting column 30321 that is separated from the second limiting hole 202. In this embodiment, the first adjustment button 3032 is in planar abutment contact with the first limiting base 3031 and the first cover plate 3033.

[0087] Optionally, the first limiting groove 30331 may be provided only on the first limiting base 3031 or the first cover plate 3033. Optionally, the first limiting groove 30331 may be provided on the first adjustment button 3032, and the first limiting boss 30322 may be provided on the first limiting base 3031 and the first cover plate 3033, or the first limiting boss 30322 may be provided only on the first limiting base 3031, or the first limiting boss 30322 may be provided only on the first cover plate 3033.

[0088] Furthermore, the first cover plate 3033 and the first limiting base 3031 are positioned by hole-shaft matching, such as Fig. 9 and Fig.15 As shown, a first fixing column 30314 is provided on the first limiting base 3031, and a corresponding first fixing hole 30332 is provided on the first cover plate 3033. The first fixing column 30314 is inserted into the first fixing hole 30332 to facilitate the assembly of the first adjustment button 3032. The axial direction of the hole-shaft matching structure is consistent with the axial direction of the first fixing rod 300 and the second fixing rod 200. Optionally, the first cover plate 3033 and the first limiting base 3031 can also be connected in a snap-fit ​​form.

[0089] In one embodiment, in order to facilitate the automatic resetting of the first adjustment button 3032, a resetting spring pin 30312 is provided on the first limiting base 3031, the fixed end of the resetting spring pin 30312 is fixed on the first limiting base 3031, and the free end of the resetting spring pin 30312 abuts against the first adjustment button 3032. Specifically, the moving direction of the free end of the resetting spring pin 30312 is consistent with the axial direction of the second limiting column 30321. When the first adjustment button 3032 drives the second limiting column 30321 to disengage from the second limiting hole 202, the resetting spring pin 30312 is in a compressed state, and when the external force on the first adjustment button 3032 is withdrawn, the free end of the resetting spring pin 30312 is reset, driving the first adjustment button 3032 to reset to the initial position.

[0090] Optionally, the reset pin 30312 may also be a spring structure, or a spring structure, or a rubber body that can undergo elastic deformation.

[0091] In one embodiment, in order to facilitate the control of the axial linear movement distance of the first shell 400 relative to the first fixed rod 300 and determine the needle insertion depth, a first clamping ring 407 is provided at one end of the first shell 400, and the first clamping ring 407 is movably mounted on the first fixed rod 300. The first clamping ring 407 is detachably connected to the first shell 400, and a first threaded hole is provided on the first clamping ring 407. A first locking screw 401 is provided on the first threaded hole. By rotating the first locking screw 401, one end of the first locking screw 401 located in the first shell 400 can abut against or disengage from the first fixed rod 300, thereby presetting the needle insertion depth to meet the reciprocating movement of the first shell 400 during biopsy. The axial reciprocating movement of the first fixed rod 300 drives the first needle tube 600 to perform biopsy puncture sampling; and the first needle tube 600 will not move over the travel to avoid the ablation electrode 602 from causing damage to human tissue.

[0092] In this embodiment, the first shell 400 and the first clamping ring 407 are detachably connected by a snap-fit ​​form or a boss and a groove snap-fit ​​form.

[0093] Furthermore, since the contact ends of the first locking screw 401 and the first fixing rod 300 are planar structures, a planar structure is provided at a position corresponding to the first fixing rod 300 to increase the contact area between the two and make the relative fixing structure of the two more stable.

[0094] Similarly, the second housing 100 is provided with a second threaded hole, and the second threaded hole is provided with a second locking screw 101, one end of which can abut against the second fixing rod 200. The first locking screw 401 and the second locking screw 101 have the same structure and principle, which will not be described in detail here.

[0095] In one embodiment, in order to facilitate the assembly and fixation of the outer sheath tube 500, a first fixing sleeve 302 is provided on the first fixing rod 300. Figure 5 As shown, the first fixed sleeve 302 is provided with a fifth channel 3024, and the fifth channel 3024 is used for the first needle tube 600 or the suction needle tube 1001 or the first push rod 2001 to pass through, and is connected to the first housing 400. The first fixed sleeve 302 is detachably arranged in the first channel 301 of the first fixed rod 300. In this embodiment, a first clamping groove 3023 is arranged on the first fixed rod 300. An adapted first elastic buckle 3022 is arranged on the first fixed sleeve 302, and the first elastic buckle 3022 is clamped in the first clamping groove 3023 to fix the first fixed sleeve 302. Optionally, the first elastic buckle 3022 can also be arranged on the first fixed rod 300, and the first clamping groove 3023 can be arranged on the first fixed sleeve 302.

[0096] A third threaded hole is provided at one end of the first fixing sleeve 302, and a third locking knob 3021 is provided on the third threaded hole. Fig.26 As shown, a flange sleeve 501 is provided at one end of the outer sheath 500, wherein the diameter of the flange sleeve 501 is larger than the diameter of the fifth channel 3024 and smaller than or equal to the diameter of the third threaded hole. By locking the third locking knob 3021, the flange sleeve 501 is squeezed and fixed on the first fixed sleeve 302.

[0097] Optionally, the other end of the first fixing sleeve 302 can be set to a conical structure, one end of the third locking knob 3021 can be set to a matching conical structure, and the outer sheath 500 can be fixed between the two conical structures. Optionally, glue can be used for direct bonding and fixing.

[0098] In one embodiment, a head end rotating member 102 is provided at one end of the second housing 100, and the head end rotating member 102 is rotatably disposed at one end of the second housing 100 away from the second fixing rod 200, and a first guide tube 1021 is provided on the head end rotating member 102. Figure 4 and Figure 6 As shown, the first guide tube 1021 is adapted to the second channel 201 of the second fixing rod 200 , the first guide tube 1021 is movably inserted into the second channel 201 , and the first guide tube 1021 can rotate relative to the second fixing rod 200 .

[0099] Further, the clamp channel holder on the head end rotating member 102 is detachably arranged on the head end rotating member 102. Specifically, the clamp channel holder is connected to the head end rotating member 102 through a Luer joint. Optionally, the two can also be connected in the form of an interference fit.

[0100] Furthermore, if Figure 12-14 As shown, the clamp channel fixator includes an endoscope buckle 1023 adapted to the endoscope clamp channel opening 1025, a first rotating member 1022 and an elastic seal 1024, the elastic seal 1024 is provided with a first fixing channel and is arranged in the first rotating member 1022, the first rotating member 1022 and the endoscope buckle 1023 are matched by threads, when the first rotating member 1022 is tightened and fixed, the elastic seal 1024 squeezes the stress expansion tube sleeved on the head end rotating member 102, thereby realizing the fixation of the ablation device relative to the endoscope clamp channel opening 1025, avoiding the risk of off-target.

[0101] Specifically, Fig.12 and Fig.13As shown, a first locking external thread is provided at one end of the endoscope buckle 1023, and a matching first locking internal thread is provided on the first rotating member 1022. At the same time, a first fixing sleeve 10221 with an elastic structure is provided at a position corresponding to the first locking internal thread, and an elastic sealing member 1024 is provided in the first fixing sleeve 10221. The first rotating member 1022 provided with a first locking internal thread segment is in a truncated cone shape. When the first locking internal thread and the first locking external thread cooperate, the inner diameter of the first locking internal thread segment gradually decreases, so that the first rotating member 1022 squeezes the first locking external thread segment of the endoscope buckle 1023, and then squeezes the first fixing sleeve 10221 and the elastic sealing member 1024 provided in the first fixing sleeve 10221, thereby squeezing the stress expansion tube on the head end rotating member 102, and fixing the position of the outer sheath 500 relative to the endoscope, as shown in FIG. Fig.21 As shown, reducing off-target risks.

[0102] Optionally, the structure of the present invention can also be connected to a robot channel 900 having the same structure as the endoscope forceps opening, such as Fig. 27 As shown, a robot connection port is provided on the robot channel 900, and the device of the present invention can be detachably connected to the robot connection port.

[0103] Alternatively, if Figure 22-23 As shown, a first wire 406 may also be provided, fixedly connected to the first housing 400, one end of the first wire 406 is electrically connected to the first needle tube 600, and the other end of the first wire 406 extends out of the first housing 400 to connect to the external power source. Specifically, a Luer connector 405 is provided at one end of the first housing 400, wherein the Luer connector 405 includes a first metal conductive portion 4052 and a first non-metal insulating portion 4051, the first metal conductive portion 4052 is electrically connected to the first needle tube 600, the first non-metal insulating portion 4051 extends out of the first housing 400 to form a Luer interface, and the first wire 406 is connected to the first metal conductive portion 4052 to achieve energy transmission.

[0104] The above is only a preferred embodiment of the present invention. It should be noted that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A medical device, characterized in that: include: The first fixing rod is provided with a first through passage; The second fixing rod is provided with a second through passage; A first shell is provided with a first cavity, the first shell is sleeved on one end of the first fixing rod, and the first shell can move relatively linearly along the axis of the first fixing rod; A second shell is provided with a second cavity, the second shell is sleeved on one end of the second fixing rod, and the second shell can move relatively linearly along the axis of the second fixing rod; Wherein, the first fixing rod and the second fixing rod are detachably connected, a first fixing assembly is provided at the connection between the first fixing rod and the second fixing rod, and the first fixing assembly is provided with a retractable first locking channel; An outer sheath tube is provided with a third through passage, the outer sheath tube is arranged at one end of the second shell, one end of the outer sheath tube passes through the first locking passage and is connected to the first fixing rod; The medical consumable is a slender structure and is movably arranged in the third channel of the outer sheath tube. The medical consumable has a distal end and a proximal end. The distal end of the medical consumable can be extended out or received in the outer sheath tube.

2. A medical device according to claim 1, characterized in that: The first fixing assembly includes a first locking knob, an elastic fixing member and a first top block, the first locking channel is arranged on the elastic fixing member, the first locking knob is provided with a through first mounting channel, the elastic fixing member is arranged in the first mounting channel, and the first top block is arranged on the second fixing rod; The first locking knob is provided with a first external thread, and the second fixing rod is provided with a corresponding first internal thread. When the first locking knob is screwed and locked, the first top block squeezes the elastic fixing member to reduce the inner diameter of the first locking channel.

3. A medical device according to claim 2, characterized in that: The second fixing rod is provided with a second external thread, and the first fixing rod is provided with a matching second internal thread, wherein the inner diameter of the second internal thread is greater than the outer diameter of the first locking knob.

4. A medical device according to claim 1, characterized in that: The first fixing rod further comprises a first limiting assembly disposed at the connection between the first fixing rod and the second fixing rod, the first limiting assembly comprising a first limiting base disposed on the first fixing rod, a first cover plate detachably connected to the first limiting base, and a first adjusting button, a third cavity is disposed between the first limiting base and the first cover plate, and a part of the first adjusting button is movably disposed in the third cavity; In which, a second limiting structure that cooperates with each other is provided between the first adjusting button and the second fixing rod, and the second limiting structure includes a second limiting column arranged on the first adjusting button and a second limiting hole arranged on the second fixing rod, or a second limiting hole arranged on the first adjusting button and a second limiting column arranged on the second fixing rod, and the second limiting column can be inserted into or withdrawn from the second limiting hole.

5. A medical device according to claim 4, characterized in that: A first abutment surface is provided on the first adjustment button, and a second abutment surface is provided on the first limiting base, and the first abutment surface abuts against the second abutment surface, wherein a moving direction of the second abutment surface relative to the first abutment surface is consistent with a moving direction of the second limiting column relative to the second limiting hole.

6. A medical device according to claim 4, characterized in that: The first adjusting button is provided with a first limiting boss, the first limiting base is provided with a first limiting groove, and / or the first cover plate is provided with a first limiting groove; Or the first adjusting button is provided with a first limiting groove, the first limiting base is provided with a first limiting boss, and / or the first cover plate is provided with a first limiting boss; Among them, the first limiting groove is adapted to the first limiting boss, the first limiting boss is inserted into the first limiting groove, the moving direction of the first limiting boss relative to the first limiting groove is consistent with the moving direction of the second limiting column relative to the second limiting hole, and the length of the first limiting groove is not less than the moving distance of the non-fixed end of the second limiting column.

7. A medical device according to claim 6, characterized in that: A reset spring pin is provided between the first limit base and the first adjustment button, the fixed end of the reset spring pin is provided on the first limit base, and the free end of the reset spring pin abuts against the first adjustment button.

8. A medical device according to claim 1, characterized in that: A head-end rotating piece is provided at one end of the second shell, and the head-end rotating piece is rotatably arranged at an end of the second shell away from the second fixed rod. A first guide tube is provided on the head-end rotating piece, and the first guide tube is adapted to the second channel of the second fixed rod. The first guide tube is movably inserted in the second channel, and the first guide tube can rotate relative to the first fixed rod.

9. A medical device according to claim 8, characterized in that: It also includes a clamp channel holder arranged on the head end rotating member, the clamp channel holder can be detachably arranged on the head end rotating member, the clamp channel holder includes an endoscope buckle adapted to the endoscope clamp channel opening, a first rotating member and an elastic sealing member, the elastic sealing member is provided with a first fixed channel, the elastic sealing member is arranged in the first rotating member, the first rotating member and the endoscope buckle are matched through threads, when the first rotating member is tightened and fixed, the endoscope clamp channel opening squeezes the elastic sealing member, and then the first fixed channel is contracted to lock and fix the stress tube sleeved on the outer sheath tube.

10. A medical device according to any one of claims 1 to 9, characterized in that: The medical consumable is an aspiration needle tube, one end of which is provided with a puncture tip, the other end of the aspiration needle tube is connected to the first shell, and the aspiration needle tube is provided with a first aspiration channel running through the aspiration needle tube.

11. A medical device according to claim 10, characterized in that: It also includes a needle core, one end of which is provided with a needle cap, the needle cap is detachably connected to the first shell, the needle core can be movably inserted into the first suction channel, and the other end of the needle core does not pass through the puncture tip of the suction needle tube.

12. The medical device according to claim 10, characterized in that: A negative pressure device is also included, and the negative pressure device is detachably connected to the first shell and communicated with the first suction channel.

13. A medical device according to any one of claims 1 to 9, characterized in that: The medical consumable is a first push rod of a rod-shaped structure, the proximal end of the first push rod is connected to the first shell, and the distal end of the first push rod is provided with an ablation electrode, and the ablation electrode can be configured with ablation energy.

14. A medical device according to claim 13, characterized in that: The first push rod and the ablation electrode are integrally formed of a metal conductive material, and a first insulating layer is provided on the first push rod, wherein the distal end portion of the first push rod is exposed to form the ablation electrode.

15. A medical device according to claim 14, characterized in that: The ablation electrode has a puncture needle tip, wherein the first push rod is provided with a through fourth channel, the fourth channel penetrates the ablation electrode to form a first needle tube, and the fourth channel can be used to communicate with a negative pressure device or to plug in an electrode needle.

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